ISL6257

FN9288 Rev 2.00

Page 5 of 22

Jan 17, 2007

DCPRN Sink Current

DCPRN = 0.4V

3

8

11

mA

DCPRN Leakage Current

DCPRN = 5V

-0.5

0.5

µA

CSON to GND resistance

CSON = 12.6V

315

380

485

k



Thermal Shutdown Temperature

150

°C

Thermal Shutdown Temperature Hysteresis

25

°C

NOTE:

4. This is the sum of currents in these pins (CSIP, CSIN, BGATE, BOOT, UGATE, PHASE, CSOP, CSON) all tied to 16.8V. No current in pins EN,

ACSET, DCSET, VADJ, CELLS, ACLIM, CHLIM.

Electrical Specifications

DCIN = CSIP = CSIN = 18V, CSOP = CSON = 12V, ACSET = DCSET = 1.5V, ACLIM = VREF,

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

Typical Operating Performance

FIGURE 1. VDD LOAD REGULATION

FIGURE 2. VREF LOAD REGULATION

FIGURE 3. ACCURACY vs AC ADAPTER CURRENT

FIGURE 4. SYSTEM EFFICIENCY vs CHARGE CURRENT

0.6

0.3

0.0

-0.3

-0.6

15

0

5

10

20

40

LOAD CURRENT (mA)

0.10

0.08

0.06

0.04

0.00

0

100

200

300

400

0.02

LOAD CURRENT (

A)

0

1

2

3

4

5

6

7

8

9

10

10

20

30

40

50

60

70

80

90

100

CSIP-CSIN (mV)

0

LOAD CURRENT (A)

100

96

92

88

84

80

76

1.5

0

0.5

1.0

2.0

2.5

3.0

3.5

4.0

VCSON = 16.8V

VCSON = 8.4V

2 CELLS

VCSON = 12.6V

3 CELLS

4 CELLS